Large Modulus Spur Ring Gear: 1.Material:Carbon/Alloy steel 1) Customer's drawing 2) High Quality Large Modulus Spur Gear for Heavy-Duty ... : Custom Open Die Forging, Main Shaft, Wind Power Shaft, Stabilizer, Flange, Coupling, BOP Body, Tube Plate, Roller Forging, Ring Forging, Gear Blank, Gear Wheel ...